Well Bill installed my headers and we put the rear on first, tightened that down tight, then put the cross over into the rear header and fit the front one into place and used a rubber mallet to push the cross over into the front header. Used torca clamps to tighten it down and without even using copper RTV and it doesn't leak from the headers at all. I have a slight leak from after the V clamp but that's because Bill didn't have another extra 3" torca clamp and had to use the one that came with it. Other wise these went in easy and sealed great.
